CN103180105B - Power tool brake mechanism - Google Patents
Power tool brake mechanism Download PDFInfo
- Publication number
- CN103180105B CN103180105B CN201180051823.1A CN201180051823A CN103180105B CN 103180105 B CN103180105 B CN 103180105B CN 201180051823 A CN201180051823 A CN 201180051823A CN 103180105 B CN103180105 B CN 103180105B
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- China
- Prior art keywords
- brake
- unit
- power tool
- permanent magnet
- brake unit
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- 230000007246 mechanism Effects 0.000 title claims abstract description 86
- 238000009434 installation Methods 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 230000005291 magnetic effect Effects 0.000 description 57
- 238000000034 method Methods 0.000 description 32
- 238000001994 activation Methods 0.000 description 31
- 230000004913 activation Effects 0.000 description 30
- 230000008569 process Effects 0.000 description 30
- 238000004137 mechanical activation Methods 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 238000010586 diagram Methods 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 11
- 230000008859 change Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 230000003213 activating effect Effects 0.000 description 7
- 230000004907 flux Effects 0.000 description 7
- 239000004411 aluminium Substances 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 238000010276 construction Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 230000005389 magnetism Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003302 ferromagnetic material Substances 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000008450 motivation Effects 0.000 description 2
- 229910001172 neodymium magnet Inorganic materials 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005417 remagnetization Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0078—Safety devices protecting the operator, e.g. against accident or noise
- B23Q11/0092—Safety devices protecting the operator, e.g. against accident or noise actuating braking or stopping means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Portable Power Tools In General (AREA)
Abstract
The present invention relates to a kind of hand tool（12a；12b；12c；12d；12e）Power tool brake mechanism, especially hand-held tool machine braking device, with least one brake unit（14a；14b；14c；14d；14e）.It is proposed that, the brake unit（14a；14b；14c；14d；14e）It is configured to that module is installed（54a；54b；54c；54d；54e）.
Description
Background technology
The power tool brake mechanism of hand tool has been known, and it has a brake unit.
The content of the invention
The present invention relates to a kind of power tool brake mechanism of hand tool, especially hand held power machine braking dress
Put, with least one brake unit.
It is proposed that, the brake unit is configured to install module." hand tool " especially should herein
A toolroom machine, especially hand held power machine are understood to, it can be transported by operator without transporter.Portable work
Especially there is tool machine one to be less than 50kg, preferably smaller than 20kg and particularly preferably less than 10kg quality." brake unit " exists
This is especially appreciated that a unit, and it is arranged at least substantially reducing compared with the operating rate of part
And/or the speed of one movable part of limitation, especially one rotary part, especially rotational speed.Except due to portion
The supporting structure of part is purely outside the caused speed of friction is reduced and/or limited, and preferably brake unit is reduced and/or limitation is fast
Degree.Brake unit is preferably arranged for especially more than 0.1s, preferably greater than 0.5s and particularly preferably less than 3s time
The part, especially braking are braked in interval since an operating rate and is arrived and is less than the 50% of operating rate, preferably smaller than works
20% speed of speed and particularly preferably speed of the braking to 0m/s.
Statement " installation module " should especially be defined as the structure of a unit herein, and plurality of part is pacified in advance
Fill and the unit as integral installation in a total system, especially hand tool.Installing module preferably has extremely
A few retaining element, it is arranged for that module will be installed and total system is detachably connected.Advantageously, installing module can be with
Disassembled especially by less than 10 retaining elements from total system, preferably by less than 8 retaining elements and particularly preferably
Less than 5 retaining elements.Retaining element is particularly preferably configured to bolt.But it is also recognized that retaining element is configured to it
It seems significant element, such as Quick-clamped element, the retaining element that can toollessly operate etc. for technical staff.
It is preferred that at least one function of installing module is guaranteed from the state that total system is disassembled.Installing module can be especially excellent
Selection of land is dismantled by terminal user.Thus module is installed and is configured to replaceable unit, it can pass through an other installation
Module replaces, such as in the case where there is installation module the Function Extension and/or function of defect or total system to change.By system
Moving cell is used as the design for installing module, it can be advantageous to realize the wide use scope of brake unit.Exist
Hand tool in integrated can be realized with simple in construction.In addition thus, it is possible to which production cost is advantageously kept as
It is very low.
Advantageously, brake unit is configured to the brake of machinery.It is preferred that the brake unit has at least one friction system
Dynamic liner, it is arranged in braking mode braking main shaft.It can realize that one is used to brake main shaft with simple in construction
Brake unit.
Advise in a kind of design of conversion, brake unit is configured to electromagnetic brake." electromagnetic brake " exists
This is especially appreciated that a brake, it by using magnetic field compared with operating rate at least substantially without frictionally
Reduce and/or one movable part of limitation, the especially speed of especially one rotary part, rotational speed, especially
In addition to except the supporting arrangement due to part, speed is reduced and/or braked purely caused by friction." substantially without frictionally
Reduce and/or limit " braking to a part is especially appreciated that herein, the braking as caused by bearing except rubbing
Wipe and carried out outside power and/or the resistance caused by flowing zerofriction force.The especially braking by brake unit of the part
Carry out to the decoupling of the contact between part and the friction facing of braking member.But in principle it is also recognized that except at least
One friction brake unit coupled with magnetic field brake or decoupling is set substantially outside friction free brake unit.In addition make
Moving cell is especially configured to the brake unit of external source driving." brake unit of external source driving " should especially be managed herein
Solve as a brake unit, it causes the braking by magnetic field to part with the magnetic field decoupling of motor unit.It is preferred that electronic
The stator and/or rotor and the magnetic field decoupling of brake unit of machine unit.
Brake unit is advantageously configured to eddy-current brake." eddy-current brake " is especially appreciated that one herein
Individual brake, it brakes the element using the eddy current loss of a hardware moved in magnetic field.Preferred to will system
Moving cell is configured to eddy-current brake, between at least two permanent magnets set one by advantageously conductive material, such as copper and/
Or the eddy-current disc that aluminium is constituted.Term " ... between " be especially appreciated that a kind of space arrangement herein, wherein these
Part sets at least along an axis successive and overlapped at least in part along axis observation.According to this hair
In a kind of conversion configuration of bright power tool brake mechanism, brake unit is configured to hysteresis brake." hysteresis brake " exists
This is especially appreciated that a brake, and it is by an element moved in magnetic field, especially ferromagnetic element
Remagnetization and produce brake force and/or braking moment.Be configured to hysteresis brake preferred to by brake unit, it is described extremely
The braking member that one of setting brake unit is made up of ferromagnetic material between few two permanent magnets.This can be advantageously carried out tool
There is the brake unit of long life.But it is also recognized that brake unit is configured to another seem have for technical staff
The electromagnetic brake of meaning.This can be advantageously carried out without the brake unit frictionally acted on.
It is preferred that brake unit has at least one braking member, the braking member is configured to permanent magnet.But can also think
Arrive, brake unit has a braking member for being configured to coil for being used to produce magnetic field in a kind of replacement configuration.Especially
It is preferred that the brake unit has at least two braking members, they are configured to permanent magnet.Two be configured to permanent magnet system
Dynamic element is preferably movingly supported by relative to each other, is especially rotatably supported by relative to each other.Permanent magnet is preferably by dilute
Native magnet such as neodymium iron boron（NdFeB）, SmCo（SmCo）Deng composition.It is envisioned that, permanent magnet is by another for technology people
Member seems that significant material is constituted.Permanent magnet is preferably configured as annular.In addition permanent magnet preferably has circumferentially side
To the fan-shaped section of setting, these fan-shaped sections circumferentially have alternate polarity.This can realize braking simple in constructionly
Unit.It is furthermore possible to be advantageously carried out the brake unit unrelated with voltage supply.
It is further recommended that, toolroom machine brake unit includes at least one driver element, and it has at least one driving element,
At least one braking member of brake unit is set in driving element." driver element " is especially appreciated that one herein
Unit, it includes at least one motor unit and it is arranged for changing by energy, especially from electric energy to machinery
Can conversion produce driving force and/or driving moment.It is preferred that driver element and one are used for driving force and/or driving moment
The driven unit being delivered on process tool couples to process workpiece.Advantageously the driving element is configured to armature shaft,
Braking member is at least partially disposed in the driving element." armature shaft " is especially appreciated that an axle herein,
At least one magnetizable unit and/or little gear of motor unit is set to transmit power and/or torque on the axle.It is especially excellent
Selection of land, brake unit is not connected rotatably with armature shaft.But it is also recognized that braking member is arranged on one and armature
On the axle that axle is not coupled rotatably by dismountable shaft coupling especially.It is preferred that braking member is arranged on driver element
A side away from driving side on." driving side " is especially appreciated that a side of driver element, the side edge herein
Rotation axis that driver element, the especially armature shaft of motor unit is towards a driven unit and/or driver element
A little gear be arranged on the side, the little gear is engaged with a gear of driven unit.It is envisioned that, braking member
It is arranged on the driving side of driver element.By setting energy of the braking member of brake unit in the driving element of driver element
Enough it is advantageously carried out compact brake unit.
The power tool brake mechanism advantageously comprises at least one driven unit, and the driven unit has at least one driven
Element, sets at least one braking member of brake unit on the drive element." driven unit " herein especially should be by
It is interpreted as a unit, the unit can be by a driver element driving and by the power produced by driver element and/or torque
It is delivered on process tool.Can be advantageously by setting of the braking member of brake unit on the drive element of driven unit
Save structure space.
It is further recommended that, driven unit is configured to bevel gearing." bevel gearing " especially should herein
When being understood to a transmission device, the transmission device has one relative to the output shaft that input shaft is obliquely installed, wherein, it is defeated
Entering the rotation axis of axle and output shaft preferably has a common intersection point." being obliquely installed " is especially appreciated that herein
One relative arrangement with another axis of axis, the arrangement of especially two intersecting axis, wherein, the two axis are pressed from both sides into
One is different from 180 ° of angle.It is preferred that the rotation axis of input shaft and the rotation axis of output shaft are being configured to Bevel Gear Transmission
One 90 ° of angle is pressed from both sides into the installment state of the driven unit of device." input shaft " is especially appreciated that one herein
Individual axle, power and/or torque are incorporated into the driven unit for being configured to bevel gearing by it.Input shaft can herein for example
It is configured to one of the motor unit of the driver element armature shaft being made up of little gear." output shaft " especially should herein
When being understood to an axle, power and/or torque are for example delivered to one and adding that output shaft is not connected rotatably by it
On work cutter." not rotatably " is especially appreciated that a connection herein, and the connection does not change at least substantially
Become ground transmission torque and/or rotary motion." at least substantially unchanged transmit " be especially appreciated that herein except
Power and/or torque are fully transmitted on another part from a part outside due to being lost caused by friction and/or error.It is excellent
Select brake unit along the line of force, be at least partially disposed on bevel gear especially from the line of force of the motor unit of driver element
Behind the transmission device input gear of transmission device." transmission device input gear " is especially appreciated that a tooth herein
Wheel, its gear in the installment state of bevel gearing with input shaft, the little gear especially with armature shaft are nibbled
Close.It is envisioned that, a braking member for being configured to permanent magnet is arranged on the side towards process tool of tool fitting
Upper and process tool includes one on the side towards tool fitting and is configured to vortex cell and/or hysteresis element
Braking member.This can realize collection of the brake unit in the driven unit of bevel gearing is configured to simple in construction
Into.In addition the relative motion that drive element can be advantageously employed comes by mechanical activation unit activating brake unit.
Advise in a kind of particularly preferred embodiment, power tool brake mechanism has at least one mechanical activation list
Member." mechanical activation unit " is especially appreciated that a unit herein, and it is caused due to relative motion especially makes
The trigger process and/or activation of moving cell, wherein, the relative motion is different from switch element for producing electric signal
Pure switch motion and move especially by the motion of magnetic cell and/or caused by inertia and constitute, especially by rotating
Driving element and/or drive element and/or being moved caused by inertia for process tool constitute." triggered within a context
Journey " is especially appreciated that mechanical, electric, magnetically and/or electrically son the signal for sending a state herein, and it is arranged for
Introduce activation." activation " is especially appreciated that the mechanical, electric, magnetically and/or electrically sub of brake unit swashs herein
Live in producing power and/or the torque for braking part." set " and be especially appreciated that specially within a context
Programming, design and/or configuration.In a kind of preferred embodiment according to the power tool brake mechanism of the present invention, unit is activated
It is arranged for causing trigger process and activation due to relative motion, does not postpone in time substantially especially at least
Ground causes.Here, activation unit is arranged for because relative motion for example sends signal and at least basic to trigger process
On simultaneously introduce the activation of brake unit.The same configuration for being contemplated that mechanical activation unit, wherein being used as trigger process
One is operated to switch and introduce by actuator and/or spring force and/or by another for skill by relative motion
Art personnel seem activation of the significant operating element after trigger process.In addition equally it is contemplated that activation unit bag
A sensor unit is included, the sensor unit senses the relative motion and thus introduces a trigger process, wherein, activation
Process is for example introduced by an actuator.
Power tool brake mechanism it is another according to the present invention configuration can be, activation unit mechanically, electricity ground, magnetic
Ground and/or electronically it is connected with the electromagnet of brake unit, wherein, electromagnet is arranged at least one operational mode
Influence the magnetic field of brake unit.Electromagnet can produce the additional magnetic field in the magnetic field existed for brake unit.
At this it is contemplated that the additional magnetic field compensates the magnetic field existed of brake unit at least in part in a kind of mode of operation
At least magnetic force and/or weaken having deposited for brake unit at least in part in braking mode compared with the magnetism intensity in magnetic field
Magnetic field at least magnetic force.The electromagnet of brake unit advantageously can equally be arranged for the electricity in hand tool
It can realize additional torque to reach electricity in short time interval in a kind of operational mode during the starting of motivation unit
The working speed of motivation unit, such as preferably reaches Accelerating running.Can by the configuration of the power tool brake mechanism according to the present invention
To be advantageously carried out reliable triggering and/or activation to brake unit.In addition in the power tool brake mechanism according to the present invention
The electric part for triggering and/or activating brake unit can advantageously be cancelled in preferred embodiment.Thus, it is possible to advantageously
By brake unit it is easy by it is fault be kept as it is very low.
It is preferred that activation unit changes at least one characteristic quantity in the magnetic field of brake unit due to relative motion." magnetic field
Characteristic quantity " is especially appreciated that a parameter herein, and it defines magnetic field, for example magnetic flux, magnetic field intensity, magnetic resistance,
Magnetoelectricity pressure etc..Term " change " should especially be defined as adjusting herein and/or influence.Relative motion be preferably one from
The relative motion of two parts of moving cell, two parts of driver element and/or brake unit.This can be advantageously real
Existing brake unit due to the controllability of relative motion.In addition advantageously it can be supported with can moving relative to each other due to two
Part relative motion and activate brake unit.
What particularly preferably the permanent magnet of activation unit change brake unit was other relative to one is configured to permanent magnet
Braking member polar sites.Statement " change polar sites " should especially be defined as herein the pole of permanent magnet relative to
The position of the pole of other permanent magnet changes.It is preferred that these permanent magnets are especially turned over relative to each other around an axis rotation
One angle corresponding with the pole span of permanent magnet." pole span " is especially appreciated that by a section of permanent magnet, especially
Be 360 ° of circumference be divided into electromagnet evenly along a direction, the pole especially set circumferencial direction successive
Section, the fan-shaped section especially with polarity, wherein, pole section has polarity alternate relative to each other along the direction.These are extremely excellent
Choosing is set with circumferentially staggering relative to each other.Here, highly preferred be disposed adjacent to each other.But it is also recognized that these
Pole is spaced setting of turning up the soil, and is observed more particularly along circumferencial direction.The change in magnetic field can be simply produced in structure, this
It is arranged for realizing the braking to moving component.
The invention further relates to a kind of hand tool, especially portable hand-held toolroom machine, with according to the present invention
Power tool brake mechanism, especially with hand-held tool machine braking device.Hand tool can be configured to herein
Angle grinder, rig, hand-held circular saw, chiso-mallet and/or hammer drill etc..It is recommended that, portable dam, which includes at least one, to be used for and work
The module interface that tool machine braking device is removably coupled.This can be advantageously carried out hand tool and brake dress with toolroom machine
The coupling put.
In addition the present invention relates to a kind of toolroom machine system with hand tool, especially portable hand-held toolroom machine
System, the hand tool has the power tool brake mechanism according to the present invention.In addition power tool system include one it is other
The installation module installed instead of power tool brake mechanism, is removably coupled for the module interface with hand tool.This
The high application flexibility of power tool system can be advantageously carried out.
Brief description of the drawings
Further advantage is drawn by following specification.Embodiments of the invention are shown in the drawings.Accompanying drawing, specification and power
Profit requires to combine containing substantial amounts of feature.Technical staff individually considers these features and is combined into meaningful with being also suitable for
Other combinations.It shows：
Fig. 1 shows the toolroom machine with the power tool brake mechanism according to the present invention according to the present invention with schematic diagram；
Fig. 2 shows the arrangement according to the power tool brake mechanism of the present invention in the toolroom machine according to the present invention with schematic diagram
Detailed view；
Fig. 3 shows the detailed view of the power tool brake mechanism according to the present invention with schematic diagram；
It is another according to this that Fig. 4 to be schematically represented out there is the conversion according to the power tool brake mechanism of the present invention to arrange
The toolroom machine of invention；
Fig. 5 shows the detailed view of Fig. 4 power tool brake mechanism according to the present invention with schematic diagram；
Fig. 6 shows the driven unit of the brake unit of Fig. 5 power tool brake mechanism according to the present invention with schematic diagram
The detailed view of drive element；
Fig. 7 shows the driven unit of the brake unit of Fig. 5 power tool brake mechanism according to the present invention with schematic diagram
The detailed view of another drive element；
Fig. 8 shows the construction of the brake unit of the power tool brake mechanism according to the present invention as the system of permanent magnet using schematic diagram
The detailed view of dynamic element；
Fig. 9 shows the construction on the toolroom machine according to the present invention for installation into Fig. 4 with schematic diagram to install module
The detailed view of brake unit；
Figure 10 shows the additional installation mould for being installed in conversion on Fig. 4 toolroom machine according to the present invention with schematic diagram
The detailed view of block；
Figure 11 shows the detailed view of the conversion embodiment of the power tool brake mechanism according to the present invention with schematic diagram；
Figure 12 shows that the details of another conversion embodiment of the power tool brake mechanism according to the present invention is regarded with schematic diagram
Figure；With
Figure 13 shows that the details of another conversion embodiment of the power tool brake mechanism according to the present invention is regarded with schematic diagram
Figure.
Embodiment
Fig. 1 shows that one is configured to angle grinder 60a, hand tool with power tool brake mechanism 10a
12a.Angle grinder 60a includes protective cover unit 62a, a toolroom machine housing 64a and a Top carry handle 66a, the main hand
Prolonging at one of toolroom machine housing 64a on process tool 68a side 70a on angle grinder 60a principal spread direction 72a
Stretch.Process tool 68a is configured to grinding disc herein.But it is also recognized that process tool 68a is configured to split or polished
Disk.Toolroom machine housing 64a include one be used for receive power tool brake mechanism 10a driver element 30a motor shell 74a and
One driven unit 42a for receiving angle grinder 60a gear mechanism housing 76a.Driver element 30a is arranged for passing through
Driven unit 42a is rotatably driven process tool 68a.One additional hand is set on gear mechanism housing 76a 78a.This is attached
Plus hand extends 78a transverse to angle grinder 60a principal spread direction 72a.
Fig. 2 shows arrangements of the power tool brake mechanism 10a in angle grinder 60a motor shell 74a.Toolroom machine braking dress
Put 10a and be arranged on one of motor shell 74a towards in Top carry handle 66a region.Power tool brake mechanism 10a includes a system
A moving cell 14a and mechanical activation unit 16a, the mechanical activation unit is arranged for activation brake unit 14a.Braking is single
First 14a is arranged for braking process tool 68a, and the process tool is closed due to process tool 68a inertia in angle grinder 60a
Continue to rotate after disconnected.Here, brake unit 14a is configured to electromagnetic brake.Mechanical activation unit 16a has a machinery
Visit and touch element 80a.The spy touches element 80a and is configured to lever element 82a herein.Lever element 82a has two and is in
Lever arm 84a, 86a of angle.The two lever arms 84a, 86a by lever element 82a a supporting member 88a rigidly
It is connected with each other.Supporting member 88a is arranged for the common work by the retaining element 92a that bolt 90a is configured to one
With can be rotated to support on motor shell 74a inner face.Lever element 82a is arranged for intercepting angle grinder 60a setting
Operation switch 94a's in Top carry handle 66a moving and passing it on activation unit 16a operating element 96a.
This, lever element 82a towards Top carry handle 66a lever arm 84a with angle grinder 60a Operation switch 94a mechanically to couple.This
Outer lever element 82a with away from Top carry handle 66a lever arm 86a with activate unit 16a operating element 96a couple.Away from master
Hand is coupled to 66a lever arm 86a at this in operating element 96a coupling slot 98a.Operating element 96a is arranged on system
On a moving cell 14a housing unit 100a.Housing unit 100a has the receiving element 102a of a tank shape.The tank shape
Receiving element 102a is made up of not magnetizable material, such as aluminium, stainless steel.Operating element 96a is same by not magnetizable
Material, such as aluminium, stainless steel etc. are constituted.Thus, it is possible to which brake unit 14a leakage field is kept as into very little.Operating element 96a
In the receiving element 102a for the tank shape that can be rotatably set in housing unit 100a.Operation switch 94a is being operated by operator
When, lever element 82a is swung around one by the supporting member 88a and bolt 90a axis of oscillation 104a limited.Here, behaviour
Make element 96a in order to activate brake unit 14a by lever element 82a the connecing with respect to tank shape in the receiving element 102a of tank shape
Receive element 102a rotations.
Fig. 3 illustrates power tool brake mechanism 10a brake unit 14a with section view.When along one of driver element 42a
When the rotation axis 56a for being configured to motor unit 106a armature shaft 58a driving element 32a is installed, the housing unit
The receiving element 102a of 100a tank shape is with the receiving element 102a of a tank shape central opening 108a pushing sleeve to armature shaft 58a
On.Potted component can be set between central opening 108a and armature shaft 58a, and these potted components can be in installment state
Dirt is prevented to enter.The receiving element 102a of housing unit 100a tank shape can not be relative by the holding element being not shown here
Rotationally and it is axially fixed in motor shell 74a.One of brake unit 14a is set in the receiving element 102a of tank shape
A magnet yoke element 110a and braking member 18a for being configured to the first permanent magnet 20a.Magnet yoke element 110a and the first permanent magnet
20a is not connected with each other rotatably and is not connected with the receiving element 102a of tank shape rotatably.Magnet yoke element
110a is arranged for sealing the first permanent magnet 20a magnetic field in the first permanent magnet 20a region.Magnet yoke element 110a is by iron
Magnetic material is constituted.But it is also recognized that magnet yoke element 110a seems that significant material is constituted by another for technical staff.
First permanent magnet 20a is configured to annular.In addition the first permanent magnet 20a is equally distributed with circumferentially 112a
Fan-shaped section.Circumferentially 112a has polarity alternate relative to each other to fan-shaped section.In addition, brake unit 14a has one
Other braking member 34a, it is configured to vortex cell 36a.Thus brake unit 14a is configured to eddy-current brake 26a.
But it is also recognized that brake unit 14a is configured to other electromagnetic braking unit, for example, it is configured to a hysteresis brake
Device, magnetic powder brake etc..Vortex cell 36a is constructed from a material that be electrically conducting, such as aluminium and/or copper.In addition vortex cell 36a is by structure
Make as annular.Vortex cell 36a is not connected rotatably with armature shaft 58a.It is configured to vortex cell 36a braking member
Part 34a is arranged on armature shaft 58a driver element 30a's on driving side 38a side.
In addition, brake unit 14a has an other braking member 24a for being configured to the second permanent magnet 22a.Second
Permanent magnet 22a is configured to annular.In addition, the second permanent magnet 22a has the circumferentially equally distributed sectors of 112a
Section.Circumferentially 112a has polarity alternate relative to each other to these fan-shaped sections.Brake unit 14a also has one in addition
Magnet yoke element 114a.The other magnet yoke element 114a is not connected rotatably with the second permanent magnet 22a.Second permanent magnetism
Iron 22a and magnet yoke element 114a are not connected rotatably with activating unit 16a operating element 96a.Operating element 96a exists
It is inserted into during installation along armature shaft 58a rotation axis 56a in the receiving element 102a of housing unit 100a tank shape, until
Operating element 96a clings to the receiving element 102a of a tank shape flange（It is not shown herein）On.Along armature shaft 58a's
Rotation axis 56a is observed, and flange is arranged for ensureing the axial gap between the second permanent magnet 22a and vortex cell 36a.For
The fixed operating element 96a axially further in the receiving element 102a of tank shape, housing unit 100a have a locking
Element 116a.Locking element 116a is tightened on the receiving element 102a of tank shape when mounted.But it is also recognized that locking
Element 116a by it is another for technical staff seem significant connected mode, such as by means of compress, bonding with tank shape
Receiving element 102a connections.Potted component, the potted component can be set between operating element 96a and locking element 116a
Dirt can be prevented to enter.Observed along armature shaft 58a rotation axis 56a, vortex cell 36a is arranged on the first permanent magnet
Between 20a and the second permanent magnet 22a inside brake unit 14a housing unit 100a.In addition, vortex cell 36a is ground at angle
In machine 60a operation together with armature shaft 58a around armature shaft 58a rotation axis 56a relative to the first permanent magnet 20a and
Relative to the second permanent magnet 22a rotations.First permanent magnet 20a, the second permanent magnet 22a and vortex cell 36a are along armature shaft 58a
Rotation axis 56a there is axial overlap portion.But it is also recognized that the first permanent magnet 36a, the second permanent magnet 22a and whirlpool
Fluid element 36a has a radially superposed portion or an axial overlap portion combined with radially superposed portion.
Brake unit 14a is configured to install module 54a.Here, the first permanent magnet 20a, the second permanent magnet 22a and vortex
Element 36a is constructed in housing unit 100a in preassembled mode.Here, housing unit 100a has an installation dead slot
164a, it is arranged for allow operator's realization that vortex cell 36a is installed on armature shaft 58a.After mounting, pacify
Dead slot 164a is filled for example to close by a plug 166a.In addition it can think when brake unit 14a to be configured to and install module 54a
Arrive, vortex cell 36a is for example can be rotatably set on axle in housing unit 100a, housing unit can be by a coupling
Device and/or the transmission device of a middle connection are connected with armature shaft 58a.
Brake unit 14a is in angle grinder 60a inactive state in a braking mode.In braking mode, along
The difference of armature shaft 58a rotation axis 56a observations, the first permanent magnet 20a fan-shaped section and the second permanent magnet 22a fan-shaped section
The polarity of phase opposite sense is mutually opposing.Operation switch 94a in by operator's operation Top carry handle 66a is to motor unit
106a is powered to starting during angle grinder 60a, and lever element 82a makes operating element 94a be revolved relative to the receiving element 102a of tank shape
Turn.Thus the second permanent magnet 22a rotates relative to the first permanent magnet 20a.Thus brake unit 14a is switched to an operation mould
In formula, brake unit 14a small magneticaction is on vortex cell 36a in the operational mode.Activation unit 16a is set
Characteristic quantity for changing brake unit 14a magnetic field due to the relative motion.Activation unit 16a is braked from one herein
Change brake unit 14a the first permanent magnet 20a when mode transition is into an operational mode relative to the second permanent magnet 22a's
Polar sites.In operational mode, along armature shaft 58a rotation axis 56a observe, the first permanent magnet 20a fan-shaped section and
The polarity of the identical sensing of difference of second permanent magnet 22a fan-shaped section is opposite.
When turning off angle grinder 60a due to cancelling power effect of the operator on Operation switch 94a in Top carry handle 66a
When, lever element 82a makes operating element 96a be rotated relative to the receiving element 102a of tank shape.Brake unit 14a is switched to braking
In pattern.Two permanent magnets 20a, 22a are rotated relatively to each other.Two permanent magnets 20a, 22a are herein relative to the first permanent magnet 20a
Rotation, until the first permanent magnet 20a fan-shaped section and the second permanent magnet 22a fan-shaped section difference phase opposite sense polarity along
Untill armature shaft 58a rotation axis 56a observations are opposite.Thus a voltage, vortex member are induced in vortex cell 36a
Part continues to rotate due to inertia after driving moment is cancelled.The magnetic line of force of the voltage induced relative to brake unit 14a hangs down
Directly and vortex type cause electric current.Vortex is formed herein.Vortex produces magnetic field in vortex cell 36a, the magnetic field and permanent magnetism
Iron 20a, 22a magnetic field adverse effect.Thus a braking moment is produced, the braking moment is braked to vortex cell 36a.Armature
Axle 58a is equally braked due to vortex cell 36a and armature shaft 58a not relatively turnable connection.By driver element 30a
With driven unit 42a coupling, thus process tool 68a is equally braked.Brake unit 14a magnetic field intensity and thus brake
The magnetic flux that being used for of unit 14a produces braking moment is propagated and depended on along rotation axis 56a in the first permanent magnet 20a and the
The distance between two permanent magnet 22a and the first permanent magnet 20a and the second permanent magnet 22a circumferentially 112a is relative to each other
Polar sites.
Activating unit 14a also has a reset element（It is not shown specifically herein）, it is arranged for cancelling behaviour
Brake unit 14a is reliably switched in a braking mode by author to the Operation switch 94a masterpiece used time.Reset element can
To be arranged on operating element 96a or be arranged on herein on lever element 82a.But it is also recognized that reset element is arranged on
On Operation switch 94a and it is applied on Operation switch 94a.
In addition angle grinder 60a has an antislip unit（It is not shown specifically herein）, it is arranged for making by one
The process tool 68a that individual retaining element is fixed on angle grinder 60a main shaft is held against main shaft in a braking mode
Trackslip.Main shaft of the antislip unit not rotatably with angle grinder 60a is connected.
It is contemplated that power tool brake mechanism 10a has a peace in power tool brake mechanism 10a conversion embodiment
Full unit, the safe unit is arranged for activating brake unit 14a for example when cutter bursts apart or supplied by such as voltage
Voltage to angle grinder 60a caused by the defect of cable activates brake unit when supplying and interrupting.Safe unit can be mechanical herein
Ground, electricity ground and/or be electrically constituted.It is also contemplated that power tool brake mechanism 10a has one separately in addition to brake unit 14a
Outer brake unit, the other brake unit is arranged in gear mechanism housing 76a.Here, power tool brake mechanism 10a
Driven unit 42a can be included, the driven unit has a drive element, other braking list is set on the drive element
The braking member of member.It is also contemplated that power tool brake mechanism 10a is cold including one in addition to driver element 30a unit ventilators
But unit, it is arranged for internal friction of the export by brake unit 14a due to vortex cell 36a in braking mode and produced
Heat.
Further embodiment is shown in Fig. 4 to 12.Part, feature and the function being kept essentially constant are marked with substantially
Identical reference.In order to distinguish these embodiments, letter a to d is added in the reference of these embodiments.Following
Illustrate to be basically limited to the difference relative to the first embodiment in Fig. 1 to 3, wherein, on keep constant part, feature and
Function may be referred to the explanation of the first embodiment in Fig. 1 to 3.
Fig. 4 shows that one is configured to angle grinder 60b, portable dam with a power tool brake mechanism 10b
Machine 12b.Angle grinder 60b has a similar structure substantially compared with Fig. 1 angle grinder 60a.Power tool brake mechanism
10b is arranged at this in angle grinder 60b gear mechanism housing 76b.In addition power tool brake mechanism 10b has a braking single
First 14b and mechanical activation unit 16b（Fig. 5）.Brake unit 14b is configured to electromagnetic brake.Activation unit 16b is set
Put the characteristic quantity in the magnetic field for changing brake unit 14b due to relative motion.In addition, power tool brake mechanism 10b includes
One driven unit 42b, it includes a drive element 44b, and brake unit 14b at least one is set on the drive element
It is configured to the first permanent magnet 20b braking member 18b.Driven unit 42b is configured to angle grinder 48b, the angle grinder in order to
Transmit torque and coupled with angle grinder 60b driver element 30b.Brake unit 14b comes from driver element 30b's along one
The line of force is arranged on behind bevel gearing 48b transmission device input gear 50b.Drive element 44b is configured to herein
Disk gear 118b.Disk gear 118b is small with one of driver element 30b in power tool brake mechanism 10b installment state
Gear 120b is engaged.Thus transmission device input gear 50b is made up of disk gear 118b.
Driven unit 42b also include a main shaft 122b being rotatably supported by, support flange 124b, one set
Put supporting member 126b and a drive element not coupled with main shaft 122b rotatably in support flange 124b
46b, the drive element is configured to portable element 128b.Disk gear 118b is equipped with main shaft 122b by a gap
On.Support flange 124b by driven unit 42b retaining element（It is not shown specifically herein）Removably with transmission device shell
Body 76b connections.In addition process tool 68b is by a retaining element（It is not shown specifically herein）Not rotatably with main shaft
122b connections are to process workpiece.Thus process tool 68b is rotatably driven in angle grinder 60b operation.Instrument mechanism
Dynamic device 10b has an antislip unit 130b in addition, and it is arranged in braking mode preventing process tool 68b
And/or retaining element is slided from main shaft 122b.Antislip unit 130b is configured to receive flange 132b herein, and it is by shape
It is sealed not to be connected with main shaft 122b rotatably.But it is also recognized that flange 132b is received by other for technology
Personnel seem that significant connected mode is not connected rotatably with main shaft 122b.
Fig. 6 shows driven unit 42b disk gear 118b detailed view.Disk gear 118b is by permeability magnetic material, example
As ferromagnetic material is constituted.Thus, it is possible to seal magnetic field in disk gear 118b region and can be kept as leakage field very
It is small.In addition, disk gear 118b at one of disk gear 118b on disk gear 118b teeth portion 134b side 136b
With three rotation portable elements 138b, 140b, 142b.But it is also recognized that there is disk gear 118b one to be different from three
Quantity rotation portable element 138b, 140b, 142b.Technical staff can set according to application field on disk gear 118b
Put appropriate number of rotation portable element 138b, 140b, 142b.Rotate portable element 138b, 140b, 142b circumferentially
112b be evenly distributedly arranged on disk gear 118b on teeth portion 134b side 136b.Circumferencial direction 112b is herein one
Extend in the plane that the individual rotation axis 144b perpendicular to disk gear 118b extends.Disk gear 118b is in running status
Transmit torque on process tool 68b and around rotation axis 144b rotations.In addition rotation portable element 138b, 140b,
142b extends perpendicular to the disk gear 118b side 136b away from teeth portion 134b.In driven unit 42b installment state, rotation
Turn portable element 138b, 140b, 142b to upwardly extend in portable element 128b side（Fig. 5）.
Fig. 7 shows portable element 128b detailed view.Portable element 128b, which has, to be used to receive rotation portable element
Dead slot 146b, 148b, 150b are taken in 138b, 140b, 142b rotation.Therefore, rotation portable element 138b, 140b, 142b exists
Rotation is extended in installment state along disk gear 118b rotation axis 144b to take in dead slot 146b, 148b, 150b.Rotation
Turn to take dead slot 146b, 148b, 150b circumferentially 112b is evenly distributedly arranged on portable element 128b.This outward turning
Turn to take dead slot 146b, 148b, 150b that circumferentially 112b has one than rotation portable element 138b, 140b, 142b
Big development length.Between disk gear 118b and portable element 128b circumferentially 112b realize one rotation between
Gap.The rotary gap is made up of an angular range, and disk gear 118b can be relative to portable element 128b with the angle model
Spinning turns.The angular range is made up of one 360 ° of circumference herein, the quantity that the circumference passes through permanent magnet 20b, 22b pole
Divide.Rotation portable element 138b, 140b, 142b thus, it is possible to circumferentially 112b rotation take dead slot 146b,
Dead slot 146b, 148b, 150b fringe region motion are taken in 148b, 150b relative to rotation.When rotation portable element 138b,
140b, 142b recline sub- rotation when taking on dead slot 146b, 148b, 150b fringe region, and portable element 128b makes dish type tooth
Wheel 118b is not coupled rotatably with main shaft 122b.Relative motion quilts of the disk gear 118b relative to portable element 128b
Activation unit 16b is used for the characteristic quantity for changing brake unit 14b magnetic field.But it is also recognized that rotation portable element 138b,
140b, 142b are arranged on portable element 128b and rotated and take dead slot 146b, 148b, 150b and be arranged on disk gear 118b
On.Disk gear 118b rotation portable element 138b, 140b, 142b and portable element 128b rotation take dead slot 146b,
148b, 150b form the activation unit 16b of machinery.
Annular is configured to the first permanent magnet 20b that disk gear 118b is not connected rotatably（Fig. 8）.
First permanent magnet 20b be arranged on disk gear 118b on teeth portion 134b side 136b.In addition the first permanent magnet 20b has
Circumferentially equally distributed fan-shaped sections 152b, 154b of 112b.Circumferentially 112b has fan-shaped section 152b, 154b
Polarity alternate relative to each other.Circumferentially 112b constantly replaces the polarity between magnetic north pole and south magnetic pole.System
Moving cell 14b has braking member 24b of the other construction for the second permanent magnet 22b.Second permanent magnet 22b is configured to circle
Annular and with circumferentially equally distributed fan-shaped sections of 112b（It is not shown specifically herein）.In addition the second permanent magnet
22b is arranged on portable element 128b in which not can be movable relatively by magnet yoke element 114b.Magnet yoke element 114b is arranged for
Brake unit 14b magnetic field is sealed in brake unit 14b region and makes leakage field very little.
In addition brake unit 14b has an other braking member 34b, and the other braking member is configured to whirlpool
Fluid element 36b.Thus brake unit 14b is configured to eddy-current brake 26b.Vortex cell 36b is constructed from a material that be electrically conducting, for example
Aluminium and/or copper.In addition, rotation axis 144bs of the vortex cell 36b along disk gear 118b is axially disposed at the first permanent magnetism
Between iron 20b and the second permanent magnet 22b.Vortex cell 36b is regularly connected with support flange 124b.Thus, the first permanent magnet
20b and the second permanent magnet 22b are moved in angle grinder 60b operation by main shaft 122b relative to vortex cell 36b.In order to keep away
Exempt from magnet short-cut path, portable element 128b and main shaft 122b are made up of not magnetizable material, such as stainless steel.
Brake unit 14b is in angle grinder 60b inactive state in braking mode.In braking mode, along dish type
Gear 118b rotation axis 144b observations, the first permanent magnet 20b fan-shaped section 152b and the second permanent magnet 22b fan-shaped section
The polarity of 154b difference phase opposite sense is opposite.Ground when being powered by the motor unit to driver element 30b to start angle
During machine 60b, disk gear 118b is driven by little gear 120b.Here, disk gear 118b encloses relative to portable element 128b
Around rotation axis 144b rotation, until rotation portable element 138b, 140b, 142b abut in rotation take dead slot 146b, 148b,
Untill on 150b fringe region.Thus disk gear 118b is made not coupled with main shaft 122b rotatably.Main shaft 122b
Thus it is rotatably driven.Thus the process tool 68b being fixed on main shaft 122b is equally rotatably driven.In angle grinder
In 60b operation, on a small magneticaction to vortex cell 36b.In order to reduce magnetic force it is also recognized that permanent magnet 20b,
22b is translationally moved relative to each other in addition to being rotated relatively to each other by activation unit 16b along rotation axis 144b.Here,
Distance between permanent magnet 20b, 22b can change.One groove can be for example set on main shaft 122b, and it is along rotary shaft
Line 144b has the slope of a mathematical definition.One reciprocal element for example may be fitted in the groove.Due to around dish type tooth
118b rotation axis 144b relative motion is taken turns, the first permanent magnet 20b can be in a direction referred to from portable element 128b
On relative to the second permanent magnet 22b motion.
First permanent magnet 20b is due to the relative motion between disk gear 118b and portable element 128b relative to
Two permanent magnet 22b rotate.Thus brake unit 14b is switched in braking mode, the brake unit 14b in the braking mode
One small magneticaction is on vortex cell 36b.Activation unit 16b changes when in being transitioned into operational mode from braking mode
Brake unit 14b polar sites of the first permanent magnet 20b relative to the second permanent magnet 22b.Therefore in operational mode, along
Disk gear 118b rotation axis 144b observations, the first permanent magnet 20b fan-shaped section 152b and the second permanent magnet 22b sector
The polarity of the section 154b identical sensing of difference is opposite.
When angle grinder 60 is turned off, little gear 120b is braked by motor unit.It is fixed on adding on main shaft 122b
Work cutter 68b continues rotation due to inertia.Thus main shaft 122b equally continues around rotation axis 144b rotations.Process tool
68b has the moment of inertia bigger than little gear 120b.Thus little gear 20b brakes disk gear 118b.Disk gear 118b is relative
Rotate, taken until rotation portable element 138b, 140b, 142b cling to rotation around rotation axis 144b in portable element 128b
Untill on dynamic dead slot 146b, 148b, 150b fringe region.Brake unit 14b is switched in braking mode at this.Two forever
Magnet 20b, 22b are rotated relatively to each other.First permanent magnet 20b rotates relative to the second permanent magnet 22b herein, until the first permanent magnetism
The polarity of iron 20b fan-shaped section 152b and the second permanent magnet 22b fan-shaped section 154b difference phase opposite sense is along disk gear
118b rotation axis 144b observations are opposite.Thus a voltage is induced in vortex cell 36b.The voltage induced draws
Play vertical relative to brake unit 14b magnetic flux and eddylike electric current.Vortex is formed herein.Vortex is in vortex cell 36b
One magnetic field of middle generation, the magnetic field and permanent magnet 20b, 22b magnetic field adverse effect.Thus a braking moment, the system are produced
Kinetic moment with main shaft 122b relative to permanent magnet 20b, 22b that vortex cell 36b rotates to braking.Thus main shaft 122b and plus
Work cutter 68b is equally braked.Brake unit 14b magnetic field intensity and thus brake unit 14b be used for produce braking moment
Magnetic flux propagate depend on along distances of the rotation axis 144b between the first permanent magnet 20b and the second permanent magnet 22b with
And first permanent magnet 20b and the second permanent magnet 22b circumferentially 112b polar sites relative to each other.
In addition brake unit 14b is configured to install module together with activation unit 16b and driven unit 42b（Fig. 9）.By
This installation module 54b formation power tool brake mechanisms 10b.Here, being configured to angle grinder 60b hand tool 12b tools
There is a module interface for being used to removably couple with power tool brake mechanism 10b.Module 54b is installed to be constructed including four
For the retaining element of bolt（It is not shown here）.Bolt be arranged for will install module 54b and gear mechanism housing 76b it is removable
Connect with unloading.Operator can remove and install module 54b from gear mechanism housing 76b when needed.Angle grinder 60b and toolroom machine
Brake apparatus 10b is consequently formed a power tool system.The power tool system includes an other installation module 156b.This is another
Outer installation module 156b includes a driven unit 158b for being configured to bevel gearing.Additionally, it is contemplated that this is another
Outer installation module 156b has an other brake unit for being configured to mechanical brake（It is not shown specifically herein）.Separately
Outer installation module 156b can be replaced by operator and is arranged on gear mechanism housing 76b with installing module 54b.Operator by
This can arrange the peace for activating a unit 16b and driven unit 42b with a brake unit 14b, one to angle grinder 60b
The die-filling piece 54b or one installation module 156b with driven unit 158b.Should be with instrument mechanism for wherein angle grinder 60b
The application scenario that dynamic device 10b is run decoupledly, installing module 54b can be by the other installation module of power tool system
156b is changed by operator.Here, operator only removes and installs module 54b from gear mechanism housing 76b and will be other
Module 156b is installed to be installed on gear mechanism housing 76b.
It is contemplated that power tool brake mechanism 10b is except braking in a power tool brake mechanism 10b conversion embodiment
Unit 14b off-lying seas have an other brake unit, and it is arranged in angle grinder 60b motor shell 74b.In this toolroom machine
Brake apparatus 10b can include driver element 30b, and the driver element has a driving element, is set in the driving element
The braking member of the other brake unit.It is also contemplated that power tool brake mechanism 10b includes a cooling unit, it is set
Put for export by brake unit 10b in braking mode due to vortex cell 36b internal friction produce heat.It can also think
Arrive, brake unit 10b has an electromagnet 52b（Represented in this dotted line）.Electromagnet 52b can be arranged for single in driving
First 30b realizes additional torque to reach the working speed of motor unit when starting in short time interval, such as preferably
It is such for reaching Accelerating running.But it is also recognized that electromagnet 52b is arranged for strengthening permanent magnet 20b, 22b magnetic field.
Thus, it is possible to realize the high braking moment for braking vortex cell 36b.Electromagnet 52b can be for example single with a safety herein
Member（It is not shown here）Coupling, the safe unit activates electromagnet 52b for example when process tool 68b ruptures, to prevent or
Brake angle grinder 60b main shaft 122b continuation rotation.
Figure 11 shows the power tool brake mechanism 10c being arranged in an angle grinder 60c gear mechanism housing 76c.Work
Having machine braking device 10c includes a brake unit 14c, and it is configured to eddy-current brake 26c.In addition toolroom machine braking is filled
Putting 10c includes a mechanical activation unit 16c.The activation unit 16c of the machinery has the mechanical activation list of one and Fig. 5
Structure similar first 16b.Activation unit 16c is arranged for changing due to relative motion the spy in brake unit 14c magnetic field
The amount of levying.Brake unit 14c has a braking member 18c for being configured to the first permanent magnet 20c, it not rotatably with
One of power tool brake mechanism 10c driven unit 42c is configured to disk gear 118c drive element 44c connections.This
Outer brake unit 14c has a braking member 24c for being configured to the second permanent magnet 22c, it not rotatably with
One of driven unit 42c is configured to portable element 128c drive element 46c connections.Portable element 128c is by permeability magnetic material
Constitute, such as ferromagnetic material.Thus, it is possible to sealed in the second permanent magnet 22c region the second permanent magnet 22c magnetic field and
Leakage field can be kept as very little.
Permanent magnet 20c, 22c are constituted tubularly.First permanent magnet 20c is arranged on disk by a magnet yoke element 110c herein
On shape gear 118c flange 160c.Circumferentially whole circumferences of the 112c along disk gear 118c is set flange 160c
Put.Circumferencial direction 112c extends in the plane that a rotation axis 144c perpendicular to disk gear 118c extends.Flange
160c also is normal to the side that a side 136c away from teeth portion 134c refers at one from teeth portion and upwardly extended.Second permanent magnet 22c
One of portable element 128c is arranged on circumferentially on the excircle of 112c extensions.Permanent magnet 20c, 22c thus radially
Ground is set along one perpendicular to rotation axis 144c separation distances from each other.Brake unit 14c also includes an other quilt
It is configured to vortex cell 36c braking member 34c.Vortex cell 36c is arranged on along perpendicular to rotation axis 144c direction
Between permanent magnet 20c, 22c.In addition vortex cell 36c is constructed from a material that be electrically conducting, such as such as aluminium and/or copper.Activation unit 16c changes
Become polar sites of the first permanent magnet 20c relative to the second permanent magnet 22c.Activating unit 16c working method and be configured to
Fig. 4 to 7 explanation is may be referred in terms of vortex cell 26c brake unit 14c working method.
In addition brake unit 14c is configured to install module 54c together with activation unit 16c and driven unit 42c.Thus
Installation module 54c formation power tool brake mechanisms 10c.
Figure 12 shows the instrument being arranged in an angle grinder 60d gear mechanism housing 76d of an other conversion
Machine braking device 10d.Power tool brake mechanism 10d includes a brake unit 14d, and it is configured to hysteresis brake 28d.This
Outer power tool brake mechanism 10d includes a mechanical activation unit 16d.The mechanical activation unit 16d have one with
Structure similar Fig. 5 mechanical activation unit 16b.Activation unit 16d is arranged for changing braking due to relative motion
The characteristic quantity in unit 14d magnetic field.Brake unit 14d is also similar substantially with the structure of Fig. 5 brake unit with one
Structure.Brake unit 14d has a braking member 18d for being configured to the first permanent magnet 20d, it not rotatably with
One of power tool brake mechanism 10d driven unit 42d is configured to disk gear 118d drive element 44d connections.This
Outer brake unit 14d has a braking member 24c for being configured to the second permanent magnet 22d, it not rotatably with
One of driven unit 42d is configured to portable element 128d drive element 46d connections.In addition brake unit 14d has
One other braking member 34d for being configured to hysteresis element 162d.Hysteresis element 162d is along disk gear 118d's
Rotation axis 144d is axially disposed between the first permanent magnet 20d and the second permanent magnet 22d.But it is also recognized that magnetic hysteresis is first
Part 162d is arranged between permanent magnet 20d, 22d along a direction perpendicular to rotation axis 144d（See Figure 11）.
In brake unit 14d braking mode, observed along disk gear 118d rotation axis 144d, the first permanent magnetism
The polarity of iron 20d fan-shaped section sensing identical with the difference of the second permanent magnet 22d fan-shaped section is opposite.Here, permanent magnet
20d, 22d magnetic fields are on hysteresis element 162d.Thus circumferentially 112c produces magnetic in hysteresis element 162d
Flux.Magnetic flux produce torque, the torque reaction in driven unit 42d main shaft 122d rotation permanent magnet 20d,
22d rotary motion.For braking permanent magnet 20d, 22d.For brake permanent magnet 20d, 22d torque permanent magnet 20d,
A confining force being applied on permanent magnet 20d, 22d is produced when 22d is static.Thus, it is possible to which hysteresis brake 28d will be configured to
Brake unit 14d be used as keep brake.In operational mode, observed along disk gear 118d rotation axis 144d,
First permanent magnet 20d fan-shaped section is opposite with the polarity of the difference phase opposite sense of the second permanent magnet 22d fan-shaped section.Permanent magnet
The small magneticaction in 20d, 22d magnetic field is on hysteresis element 162d.Here, magnetic flux is worn vertically along rotation axis 144d
Cross hysteresis element 162d extensions.
In addition brake unit 14d is configured to install module 54d together with activation unit 16d and driven unit 42d.Thus
Installation module 54d formation power tool brake mechanisms 10d.
Figure 13 shows the instrument being arranged in an angle grinder 60e gear mechanism housing 76e of an other conversion
Machine braking device 10e.Power tool brake mechanism 10e includes a brake unit 14e, and it is configured to mechanical brake.The system
Moving cell 14e includes a braking member 18e for being configured to brake disc 168e.Brake disc 168e has a friction catch
Liner.In addition brake unit 14e has a keep plate 170e, and it matches friction catch liner towards brake disc with one
168e friction catch liner.In addition power tool brake mechanism 10e includes a mechanical activation unit 16e, and it is set
For brake unit 14e to be activated and/or disabled due to relative motion.The brake unit 14e of machinery is by power tool brake mechanism
10e driven unit 42e disk gear 118e rotation portable element 138e, brake disc 168e receiving element 172e and from
Moving cell 42e portable element 128e inclined-plane 178e and brake disc 168e inclined-plane 180e are constituted.
When starting angle grinder 60e, driven unit 42e main shaft 122e is by the one of angle grinder 60e driver element 30e
Individual motor unit（It is not shown specifically herein）Rotatably driven.Disk gear is produced by the activation unit 16e of machinery
Portable element 128es of the 118e and brake disc 168e relative to driven unit 42e rotates against.Thus disk gear 118e
Rotation portable element 138e cling on brake disc 168e elastic receiving element 172e.Brake disc 168e is herein relative to taking
Dynamic element 128e rotations are so more, until brake disc 168e backstops are in portable element 128e radial protrusion 176e lateral edge
On 174e.When rotation portable element 138e together with receiving element 172e backstop on portable element 128e lateral edge 174e
When, the rotation between disk gear 118e and main shaft 122e terminates.Axle between portable element 128e and brake disc 168e
To distance minimum value is reached in the position.Thus the axial force acted on brake disc 168e is so small, so that not causing
Brake force, i.e. brake are released in the position.
If angle grinder 60e is turned off, then the process opposite with the starting in angle grinder 60e is used.In dish type tooth
Being rotated on opposite direction between wheel 118e and portable element 128e is carried out.Disk gear 118e and brake disc 168e warps
Motor without driving is passed through by disk gear 118e rotation portable element 138e and brake disc 168e receiving element 172e
Unit is braked, and portable element 128e is relative to disk gear 118e is due to built-in inertia or is fixed on adding on main shaft 122e
Work cutter（It is not shown specifically herein）Continue with original rotating speed to rotate with main shaft 122e built-in inertia.Due to what is used now
Rotations of the portable element 128e relative to brake disc 168e, portable element 128e inclined-plane 178e and brake disc 168e inclined-plane
180e is slided on top of each other.Axial distance between portable element 128e and brake disc 168e becomes much larger.Here, braking
The disk 168e brake disc 168e for being configured to friction catch liner is clinged to the increase puted forth effort on keep plate 170e.Braking
Disk 168e incrementally postpones relative to portable element 128e, wherein, portable element 128e inclined-plane 178e and brake disc
168e inclined-plane 180e continues to slide on top of each other.Axial distance between portable element 128e and brake disc 168e is herein
Increase.Thus brake force is strengthened by servo-effect.
In addition brake unit 14e is configured to install module 54e together with activation unit 16e and driven unit 42e.Thus
Installation module 54e formation power tool brake mechanisms 10e.Installing module 54e includes four retaining elements for being configured to bolt
（It is not shown here）.Bolt is arranged for installation module 54e being removably connected with gear mechanism housing 76e.Operator
Module 54e can will be installed when needed to disassemble from gear mechanism housing 76e.Angle grinder 60e and power tool brake mechanism
10e is consequently formed a power tool system.
Claims (12)
1. hand tool (12a；12b；12c；12d；Power tool brake mechanism 12e), with least one brake unit
(14a；14b；14c；14d；14e), it is characterised in that the brake unit (14a；14b；14c；14d；14e) it is configured to pre-
Installation module (the 54a of assembling；54b；54c；54d；54e), so that the brake unit can be assembled and dismantled as overall,
Wherein, brake unit is arranged for part in the time interval more than 0.1s and less than 3s since an operating rate
Brake 50% less than operating rate.
2. power tool brake mechanism according to claim 1, it is characterised in that the brake unit (14e) is configured to machinery
Brake.
3. power tool brake mechanism according to claim 1, it is characterised in that the brake unit (14a；14b；14c；14d)
It is configured to electromagnetic brake.
4. power tool brake mechanism according to claim 3, it is characterised in that the brake unit (14a；14b；14c；14d)
With at least one braking member (18a, 24a；18b；24b；18c；24c；18d；24d), the braking member is configured to forever
Magnet (20a, 22a；20b, 22b；20c, 22c；20d, 22d).
5. according to the power tool brake mechanism of one of Claims 1-4, it is characterised in that provided with least one driver element
(30a), the driver element has at least one driving element (32a), and the brake unit is set in the driving element
At least one braking member (18a, 24a, 34a, 36a) of (14a).
6. according to the power tool brake mechanism of one of Claims 1-4, it is characterised in that provided with least one driven unit
(42b；42c；42d；42e), the driven unit has at least one drive element (44b, 46b；44c, 46c；44d, 46d；
44e, 46e), the brake unit (14b is set on the drive element；14c；14d；At least one braking member 14e)
(18b, 24b；18c, 24c；18d, 24d；18e, 24e).
7. power tool brake mechanism according to claim 6, it is characterised in that the driven unit (42b；42c；42d；42e)
It is configured to bevel gearing (48b；48c；48d；48e).
8. power tool brake mechanism according to claim 1, it is characterised in that the power tool brake mechanism is hand-held tool
Machine braking device.
9. the hand tool with the power tool brake mechanism according to one of above claim, it is characterised in that be provided with
At least one is used for the module interface removably coupled with the power tool brake mechanism.
10. hand tool according to claim 9, it is characterised in that the hand tool is hand held power machine.
11. with least one hand tool according to claim 9 or 10 with least one according to claim 1 to 8
One of power tool brake mechanism power tool system.
12. power tool system according to claim 11, it is characterised in that other be used for what is removably coupled provided with one
The installation module of conversion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201010043178 DE102010043178A1 (en) | 2010-10-29 | 2010-10-29 | Machine tool braking device |
| DE102010043178.8 | 2010-10-29 | ||
| PCT/EP2011/066581 WO2012055651A2 (en) | 2010-10-29 | 2011-09-23 | Power tool braking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103180105A CN103180105A (en) | 2013-06-26 |
| CN103180105B true CN103180105B (en) | 2017-09-26 |
Family
ID=44677890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180051823.1A Active CN103180105B (en) | 2010-10-29 | 2011-09-23 | Power tool brake mechanism |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2632652B1 (en) |
| CN (1) | CN103180105B (en) |
| DE (1) | DE102010043178A1 (en) |
| WO (1) | WO2012055651A2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017205860A (en) * | 2016-05-12 | 2017-11-24 | 津田駒工業株式会社 | Machine tool rotary table device |
| CN108098531B (en) * | 2016-11-25 | 2021-08-27 | 南京德朔实业有限公司 | Angle grinder, electric tool and braking method thereof |
| DE102018115303A1 (en) | 2018-06-26 | 2020-01-02 | C. & E. Fein Gmbh | Gear head and hand machine tool |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3722629A1 (en) * | 1987-07-09 | 1989-01-19 | Metabowerke Kg | Angle grinder having a braking device |
| DE4446157A1 (en) * | 1994-12-23 | 1996-07-04 | Schmid & Wezel Gmbh & Co | Brake for electric hand tool |
| US5595531A (en) * | 1995-07-26 | 1997-01-21 | Ryobi North America | Random orbit sander having speed limiter |
| CN1356192A (en) * | 2000-12-01 | 2002-07-03 | 希尔蒂股份公司 | Hand-held electric tool with safety clutch |
| GB2455528A (en) * | 2007-12-11 | 2009-06-17 | Meta Internat Co Ltd | Fast breaking device for a grinding machine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3741536A1 (en) * | 1987-12-08 | 1989-06-22 | Erhard Pauls | Brake device for braking rotating machine elements, such as the rotor of a manual angle grinder |
| US6672402B2 (en) * | 2001-12-27 | 2004-01-06 | Black & Decker Inc. | Combined fastenerless motor end cap and output device mounting |
| DE102004034268B3 (en) * | 2004-07-15 | 2005-12-29 | Wacker Construction Equipment Ag | Rotary hammer with safety coupling |
-
2010
- 2010-10-29 DE DE201010043178 patent/DE102010043178A1/en not_active Withdrawn
-
2011
- 2011-09-23 EP EP11761070.9A patent/EP2632652B1/en active Active
- 2011-09-23 CN CN201180051823.1A patent/CN103180105B/en active Active
- 2011-09-23 WO PCT/EP2011/066581 patent/WO2012055651A2/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3722629A1 (en) * | 1987-07-09 | 1989-01-19 | Metabowerke Kg | Angle grinder having a braking device |
| DE4446157A1 (en) * | 1994-12-23 | 1996-07-04 | Schmid & Wezel Gmbh & Co | Brake for electric hand tool |
| US5595531A (en) * | 1995-07-26 | 1997-01-21 | Ryobi North America | Random orbit sander having speed limiter |
| CN1356192A (en) * | 2000-12-01 | 2002-07-03 | 希尔蒂股份公司 | Hand-held electric tool with safety clutch |
| GB2455528A (en) * | 2007-12-11 | 2009-06-17 | Meta Internat Co Ltd | Fast breaking device for a grinding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012055651A2 (en) | 2012-05-03 |
| EP2632652B1 (en) | 2017-01-18 |
| WO2012055651A3 (en) | 2012-07-05 |
| CN103180105A (en) | 2013-06-26 |
| EP2632652A2 (en) | 2013-09-04 |
| DE102010043178A1 (en) | 2012-05-03 |
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